Method for ecologically restoring salinized desert soil by using coal-fired power plant byproducts

• Main Authors: ZHUO YUQUN, ZHAO YONGGAN, LI YAN, WANG SHUJUAN, XU LIZHEN
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2021
• Subjects: ADHESIVES; AGRICULTURE; ANIMAL HUSBANDRY; CHEMISTRY; DYES; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES ORIMPLEMENTS, IN GENERAL; POLISHES; SOIL WORKING IN AGRICULTURE OR FORESTRY; TRAPPING

The invention discloses a method for ecologically restoring salinized desert soil by using coal-fired power plant byproducts. The method comprises the following steps of S1, excavating salinized desert soil to be repaired, and at least filling slag and soil of an original surface layer into an excavated pit, so that the backfilled soil comprises the surface layer and at least one slag layer which is closely adjacent to the lower part of the surface layer; the slag is discharged from the bottom of a combustion chamber of a coal-fired power plant boiler; S2, at least applying desulfurized gypsum to improve surface soil; the desulfurized gypsum is produced after a limestone-gypsum wet desulfurization process is adopted by a coal-fired power plant; S3, conducting ditching on the land; arranging a drip irrigation belt in each ditch; uniformly sowing seeds of saline-alkaline tolerant plants in the ditches along the drip irrigation belts; conducting drip irrigation in the plant growth process; a water source for dri